Hose-clamp.



S. l. HART.

HOSE CLAMP,

APPLICATION mtu mme, 191e.

Patented Nov. '12, 1918.

5 a 6r' 7"' if 4. 4 Ul.' Il rl] Z4 ZZ /6 6 l' 5513 SHOM/121W To all whom t may concern.'

SAMUEL J'. HART, 0F SYRACUSE, NEW YORK, ASSIGNOR TO JOHN R. CLANCY, 0F SYRACUSE, NEW YORK.

nosa-GLP.

Application led J' anuary 6, 1516. Serial No. 70,703.

Be it known that I, SAMUEL J. HART, a citizen of the United States, residing at Syracuse, in the county of Onondaga and State of New York, have invented new and useful Improvements in Hose-Clamps, of which the following is a specification.

My invention relates to improvements in hose-clamps and consists in a new construction thereof adapted to be economically stamped up in a single piece and of a form which in usewill possess important advantages over clamps as heretofore made.

Important features of my improved clamp consist in forming the perforated ears thereof with integral side reinforcing flanges in an improved arrangement, adapting the clamps so formed to a larger range of work than has heretofore been permitted with clamps having reinforced ears. In the clamps as customarily constructed the manner of reinforcing the ears has restricted their use to be with round headed bolts only for the reinforcing flanges for the ears prevented access to the bolt heads with a wrench and thus limiting'the tightening to that obtained by the use of a screw driver or with a vise. Clamps of that character are however unsuited for a particularly valuable field of use where the larger sizes are employed and where it is not desirable to employ vises for tightening but where 1t 1s desirable to tighten to a greater degree than obtained by the use of a screw-driver only. In my improved arrangement the reinforcing flanges of the ears are turned inwardly so as to give free access to the bolt head from the sides for manipulation by a wrench, thus providing for reinforcing the ears without interfering with the use of the square or hexagon headed bolts.

Other important features of my invention comprise an improved locking means for the nut of the clamping bolt which is conveniently formed by the loop of an integral tongue and which affords an elpngated locking shoulder which is efficient in preventing the nut rotating both when tightened and when in loosened position. The tongue loop is further adapted to provide an engaging lug. when it is desired to use a vise in tightening up the clamp and to coact therewith I provide at the opposite side a suitable struck-up lug. This lug is desirably formed to provide a channel in which the tongue end will lie flush with the inside of the clamp thus making practically a true inner circle.-

The described and other features and advantages of my invention will be understood by reference to the accompanying drawing wherein like reference characters are applied to the corresponding parts in the several` views.

Figure 1 illustrates a desirable embodiment of my invention, showing the clamp in side elevation. Fig. 2 is a plan view thereof. Fig. 3 is an end elevation. Fig. 4 is a sectional view showing the vbolt and nut loosened and the clamp in expanded position and Fig. 5 is a plan view showing a desirable modified form.

As shown the clamp of my invention is stamped up from sheet metal in the form of a 'band 1 of uniform thickness, the ends of which are outwardly bent to form the ears Patented N0v.12,ieis.

2 3 and perforated to receive the clamping v bolt 4 having the nut 5 threaded thereon.

The ears 2 3 are turned over at their sides to form the reinforcing flanges 9 whereby they are made rigid and materially strengthened to prevent bending when subjected to the strains of tightening. In accordance with my invention these side reinforcing flanges 9 of at least one of the ears. are turned inwardly so as not to interfere with the manipulation of the square headed bolt as shown. The flanges 9 of both ears may desirably be inwardly turned as shown in Fig. l and the ear 3 may then be turned over at its outer end to form a locking flange 10 for the nut 5.

An additional feature of my improved clamp resides in forming a loop 11 in the bending of the integral tongue 8 of a form and arrangement to perform a locking function as to the nut` 5 to prevent its rotation. In the present embodiment this loop forms an additional lock for the nut to supplement the locking flange 10 and a double lock is thus afforded. As here shown, the locking shoulder formed by the looip provides an elongated lock which is e ective to prevent rotation of the nut in all positions of the nut on the bolt whether tightened or in extreme loosened position. In this latter function the locking Loop offers an advantage not I also take advantage of the loop 11 as a convenient means for vise engagement and if desirable may so employ oppositely arranged loops as shown in patent to Redfield 480,515, wherein' integral tongues are first shown. Or as here shown I mayk provide on the opposite side, of clamp as the exact equivalent of one loop Va slightly raised shoulder 14 to be engaged by a vise jaw. This shoulder when stamped up as shown provides clearance for the tongue end which extends into the slot at that side of the clamp.

In- Fig. 5 I have shown a desirable modified form of clamp wherein the reinforcing side flanges 16 of the ear 3 are outwardly bent so as to act as a lock for the nut 5 in place of the flange 10 of Fig. 1. In this arrangement the clamp may be closed up to a greater degree than where the flanges of both ears are inwardly turned for it will be seen that the flanges of the ear 3 will nest within the flanges of ear 2. The advantages of permitting the use of a wrench with a squared head bolt arehere preserved and on the opposite ear there is provided a double lock for the nut.

As various modifications may be made in the described constructions without departing fro'm the invention it is intended that all matter contained herein shall be interpreted as illustrative and not in a limiting sense. v

Having described my invention I claim:

1. As a new article of manufacture a hose clamp comprising a band bent into annular form and having its extremities outwardly bent to form bearing ears for a tightening heretofore obtained.

therewith means and provided with a protective tongue element arranged to span the space between the ears and having a ortion thereof arranged in proximity t0 t e tightening Imeans to act as a locking element therefor substantially as describe 22 A hose clamp comprising a band bent into annular form and having its extremities outwardly bent to form bearing ears, a bolt tter to perforations in said ears and a nut threaded onto the bolt, said band having a tongue element integrally formed and arranged to span the space between the ears and having a looped portion formed in Alose proximity to the locking bolt to provide a lockingI element, said ears, being formed with their side edges turned over to provide reinforcing flanges and the flanges of at least one ear being directed inwardly so as to 've access to the tightenin means from t e side substantially as escribed.

3. A hose clamp comprising a band bent into annular form and havin its extremities outwardly bent to formearing ears, a bolt fitted to apertures in said ears and a nut threaded onto the bolt, said band having a tongue element integrally formed therewith and arranged to span the space between the ears and having a 'looped portion formed in close proximity to the nut to provide a lock therefor, said ears being formed with their side edges turned over to provide reinforcing flanges and said flanges being turned inwardly so as to give access for tightening of the bolt and a locking flange formed on one of the ears in position to engage the nut and provide an additional lock therefor substantially as described.

In testimony whereof I have signed my name to this specification.

SAMUEL J. HART. 

